Description
ABB PM902F CPU Processor Module
The ABB PM902F is a high-performance central processing unit (CPU) module belonging to the ABB Freelance DCS (Distributed Control System) family, specifically part of the AC 900F controller series. It acts as the brain of the control system, executing complex control tasks, handling communication protocols, and processing field I/O data in industrial automation applications.
Product Detailed Description
The PM902F CPU module is designed to provide high processing speed, expanded memory, and robust network connectivity for small to large-scale process control. Operating on the ABB Freelance system architecture, it seamlessly integrates with field devices via various fieldbus standards (such as PROFIBUS, Modbus, and Ethernet) and supports full redundancy (CPU, power supply, and network) to maximize system availability in critical industrial processes.
Technical Parameters
| Feature | Specification |
| Manufacturer | ABB |
| Product Series | Freelance DCS / AC 900F |
| Model / Part Number | PM902F (e.g., 3BDH001000R0001) |
| Processor Type | 32-bit RISC / High-performance processor |
| On-board Memory | ~32 MB RAM / Flash memory for application program & data logging |
| Redundancy Support | Dual CPU redundancy, redundant Ethernet networks, power redundancy |
| Communication Interfaces | 4× Ethernet (10/100 Mbit/s), 2× Serial interfaces (RS-232/RS-485) |
| Supported Protocols | Modbus TCP/RTU, PROFIBUS DP/PA (via interface modules), IEC 60870-5-104 |
| Power Supply Voltage | 24 V DC (19.2 to 30 V DC) |
| Operating Temperature | -20°C to +60°C |
| Mounting Type | DIN Rail / Backplane rack mounting |
Product Advantages
- High Processing Power: Handles large quantities of control loops, digital/analog signals, and complex sequential control logic with minimal cycle time.
- Built-in High Availability: Supports seamless dual-CPU redundancy without interrupting running processes in case of a hardware fault.
- Flexible Communication: Multiple Ethernet ports allow physical separation of control networks, fieldbus connections, and engineering stations.
- Ease of Engineering: Fully programmed and configured using Freelance Engineering (DigiVis / Control Builder F), reducing startup and commissioning time.
- Scalable Architecture: Easily expands from a single-controller setup to a wide-area distributed DCS system.
Important Considerations (Precautions)
- Power Quality: Ensure a stable, surge-protected 24 V DC power supply. Dual redundant power inputs should be used for critical applications.
- ESD Safety: Electrostatic discharge can damage internal components. Wear an anti-static wrist strap during installation, handling, or board swapping.
- Firmware Synchronization: In redundant setups, both PM902F modules must run identical firmware versions and configuration loaded from the engineering software.
- Environmental Protection: While rated for industrial temperatures, the unit must be housed in an IP54 or higher cabinet to protect against dust, moisture, and corrosive gases.
Product Applications
- Oil & Gas / Petrochemical: Upstream production, pipeline monitoring, and refining control.
- Power Generation & Utilities: Boiler control, turbine balance-of-plant, water treatment, and district heating plants.
- Chemical & Pharmaceuticals: Batch processing, reactor control, and continuous distillation.
- Food & Beverage / Cement & Mining: Material handling, blending systems, kiln control, and packaging lines.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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